Central Command says an errant coalition strike killed 18 fighters from the Syria Democratic Forces. Some of the group’s fighters are seen here last month, in a frame grab from a video provided by the SDF that highlighted its advances in the Raqqa area. AP hide caption

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Central Command says an errant coalition strike killed 18 fighters from the Syria Democratic Forces. Some of the group’s fighters are seen here last month, in a frame grab from a video provided by the SDF that highlighted its advances in the Raqqa area.

AP

An airstrike that was meant to target ISIS in Syria instead killed 18 Syrian Democratic Forces personnel because it was “misdirected,” U.S. Central Command said Thursday.

The strike by an aircraft from the U.S.-led coalition was called in by American allies, the U.S. military says. It adds that the coalition is now studying what went wrong, to prevent similar mistakes in the future.

“The strike was requested by the partnered forces, who had identified the target location as an ISIS fighting position,” the command said in a statement about the April 11 attack. “The target location was actually a forward Syrian Democratic Forces fighting position.”

Central Command said the coalition extends its “deepest condolences” to members of the SDF and their families, adding that members of that force “have expressed a strong desire to remain focused on the fight against ISIS despite this tragic incident.”

The strike took place south of Tabqah, Central Command says. That city is roughly 30 miles west of the ISIS stronghold of Raqqa.

News of the errant strike comes three weeks after activist groups that monitor Syria said an “airstrike by U.S.-led coalition forces leveled a school west of Raqqa and killed at least 33 people,” as NPR’s Colin Dwyer reported on March 22.

Reports of that strike initially came from the group Raqqa is Being Slaughtered Silently and the the U.K.-based Syrian Observatory for Human Rights. In response, coalition forces said they routinely strike ISIS targets in the area and would review reports of civilian casualties.